CVE-2025-11747
Stored XSS in Colibri Page Builder via colibri_blog_posts Shortcode
Publication date: 2025-12-19
Last updated on: 2025-12-19
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wordpress | colibri_page_builder | 1.0.358 |
| wordpress | colibri_page_builder | 1.0.345 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in the Colibri Page Builder WordPress plugin is a Stored Cross-Site Scripting (XSS) issue via the colibri_blog_posts shortcode. It occurs because the plugin does not properly sanitize and escape user-supplied attributes. This allows authenticated users with contributor-level access or higher to inject malicious scripts into pages. These scripts then execute whenever any user views the affected page, potentially compromising user data or site integrity.
How can this vulnerability impact me? :
This vulnerability can allow attackers with contributor-level access to inject arbitrary web scripts into pages. When other users visit these pages, the malicious scripts execute in their browsers. This can lead to theft of user credentials, session hijacking, defacement, or other malicious actions that compromise the security and trustworthiness of the website.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection of this vulnerability involves identifying the presence of the vulnerable Colibri Page Builder plugin versions (up to 1.0.345) on your WordPress site and checking for usage of the `colibri_blog_posts` shortcode with potentially malicious input. Since the vulnerability is a stored XSS via shortcode attributes, you can scan your WordPress content for instances of the `[colibri_blog_posts]` shortcode with suspicious or unexpected attribute values. Additionally, monitoring HTTP requests and responses for injected scripts in pages generated by this shortcode can help detect exploitation attempts. Specific commands are not provided in the resources, but you can use WordPress CLI commands to list installed plugins and their versions, for example: `wp plugin list | grep colibri-page-builder` to check the plugin version. For scanning content, you might use database queries to search for the shortcode usage with suspicious attributes. Network monitoring tools can be used to detect unusual script injections in page responses. [1]
What immediate steps should I take to mitigate this vulnerability?
The immediate mitigation step is to update the Colibri Page Builder plugin to version 1.0.358 or later, where the vulnerability has been addressed by validating and sanitizing the `title_type` attribute to prevent XSS attacks. Until the update is applied, restrict contributor-level access and above to trusted users only, as the vulnerability requires authenticated users with such privileges to exploit. Additionally, review and sanitize any existing content using the `[colibri_blog_posts]` shortcode to remove potentially malicious scripts. Applying security plugins that detect and block XSS attempts can also help mitigate risk. [3]